GE Microwave Oven Buzzes/Zaps but Doesn't Cook: Model: JES1351WB003

Our 2003 vintage GE Microwave has started to zap. Sounds like something high energy zapping in the compartment to the right of the turntable. What's the failure? Does it pay to repair it at home vs buying a new one?

at this point I would say that possibly your magnetron and diode have failed, thus resulting in the no heat issue you are experiencing. If it were mine I would recomend replacing the unit. The unit is built in with a trim kit also, correct?

If still heating then most likely just a burnt wave guide cover. If bight arching or zapping coming from right side wall, that is the wave guide cover. Food and grease splatter collects around the edges and then becomes carbon from the continued cooking then the microwave attract to the carbon and makes more carbon which is similar to putting metal in a microwave.

Should be two plastic push rivets at the bottom of the cover, they have a small pin in the center, you can either push the pin thru so the rivet can be removed, (but then you could loose the center locking pin), or with cover off you might be able to push the pins out from the back side so the rivets will come out and then can remove the mica wave guide cover and clean all the burnt food off and probably will have to replace the cover if it is burned at any spot.